Solve for x: x2-15x+56 = 0.
using quadratic equation
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Adityajaat987:
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x² - 15 x + 56 = 0
Discriminat = b² - 4ac
=> ( 15 )² - 4×1 × 56
=> 125 - 224
=> - 99
Quadratic formula =(- b±√D²)/2a
= 15 ± √(-99)² / 2
=( 15 ± 99 )/2
= 15+( -99) / 2 = - 84 /2
= -42
= 15 -(-99)/2
= 114 / 2
= 57
Discriminat = b² - 4ac
=> ( 15 )² - 4×1 × 56
=> 125 - 224
=> - 99
Quadratic formula =(- b±√D²)/2a
= 15 ± √(-99)² / 2
=( 15 ± 99 )/2
= 15+( -99) / 2 = - 84 /2
= -42
= 15 -(-99)/2
= 114 / 2
= 57
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